ALL: Add flint

external/flint-2.4.3/fmpz_factor/extend_factor_ui.c

@@ -0,0 +1,59 @@
+/*=============================================================================
+
+    This file is part of FLINT.
+
+    FLINT is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    FLINT is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with FLINT; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+
+=============================================================================*/
+/******************************************************************************
+
+    Copyright (C) 2008, 2009 William Hart
+    Copyright (C) 2010 Fredrik Johansson
+
+******************************************************************************/
+
+#include <gmp.h>
+#include "flint.h"
+#include "fmpz.h"
+#include "fmpz_vec.h"
+#include "ulong_extras.h"
+
+void
+_fmpz_factor_extend_factor_ui(fmpz_factor_t factor, mp_limb_t n)
+{
+    slong i, len;
+    n_factor_t nfac;
+
+    if (n == 0)
+    {
+        _fmpz_factor_set_length(factor, 0);
+        factor->sign = 0;
+        return;
+    }
+
+    n_factor_init(&nfac);
+    n_factor(&nfac, n, 0);
+
+    len = factor->num;
+
+    _fmpz_factor_fit_length(factor, len + nfac.num);
+    _fmpz_factor_set_length(factor, len + nfac.num);
+
+    for (i = 0; i < nfac.num; i++)
+    {
+        fmpz_set_ui(factor->p + len + i, nfac.p[i]);
+        factor->exp[len + i] = nfac.exp[i];
+    }
+}